A siphon at a (as if on at a)

pl. [NL., neut. pl. of a siphon at us: see a siphonate.] An order of acephalous lamellibranch i ate mollusks, containing headle bivalves without respiratory tubes or siphons like those which in the Siphon at a convey water from the gills, and having the lobes of the mantle free. Most of the A siphon at a are fixed, the foot being small or wanting, and many secrete a by us. The order includes in general those bivalves best known and most useful and à -priv. + σίτος, food.]) Lo of appetite; loathing of food.